Change field char to a normal number

How to change field char to a normal number.

For example:
Input:
FIGURE { SEQ Figure * ARABIC } Construction of six test sections in Cerro Gordo County

Expected Output:
FIGURE 1 Construction of six test sections in Cerro Gordo County

Please do the needful.

Thanks

Input Docx: Construction Building Materials_Moon_revised_R2_No_Track.docx (1.4 MB)

@Mahesh39 You can achieve this by either unlinking all fields in the document using Document.UnlinkFields method, or by unlinking only SEQ fields in the document using Field.Unlink method. For example see the following code examples.
Unlink all fields:

Document doc = new Document(@"C:\Temp\in.docx");
// unlink all fields in the document.
doc.UnlinkFields();
doc.Save(@"C:\Temp\out.docx");

Unlink only SEQ fields:

Document doc = new Document(@"C:\Temp\in.docx");
// Unlink only SEQ fields
foreach (Field f in doc.Range.Fields)
{
    if (f.Start.FieldType == FieldType.FieldSequence)
        f.Unlink();
}
doc.Save(@"C:\Temp\out.docx");